Yes, Bell is looking to snuff Blossom. She's got an evil dad who is into that kind of thing. He's not teaching her morals. That's for squares.

So she has true Killing intent. Then why has't she done so right away? Would a blow from jack sword harm her then?

WHAT!? Not bad... Agreed.

Anyways, I don't think its that easy to go ahead and kill Blossom like that. Besides, Blossom may have some trouble going against Bell and anybody else born of ingredient and Chemical X, but Blossom has experience so she has to have a fighting chance against Bell. Plus, this is a webcomic. So, it may take a while for them to kill each other and one goes in defeat. About Jack's Katana, that all depends of what it thinks its right. I mean, its magic and all that was forged by Odin, Ra, and Ram. I'm not sure what use will it be to those girls fighting each other. I mean, it WAS meant for Jack. Not sure if anybody else could use it.